MacroMate — Free BMR, TDEE & Macro Calculator

Your Stats
yrs
cm
kg
%
Used for lean body mass calculation
BMR
Calories at rest
TDEE
Daily burn with activity
Target Calories
Daily Macronutrients
Protein
— kcal
Carbs
— kcal
Fat
— kcal
Protein 30% Carbs 40% Fat 30%
Daily Water
BMI
Ideal Weight
Calories Per Meal

These are estimates based on the Mifflin-St Jeor equation. Consult a healthcare professional before starting any diet or exercise program.

Understanding Your Numbers

BMR (Basal Metabolic Rate)

The calories your body burns at complete rest — just to keep your organs running. Think of it as your engine idling. Calculated using the Mifflin-St Jeor formula (most accurate for most people).

TDEE (Total Daily Energy Expenditure)

Your actual daily calorie burn including activity. Eat below TDEE to lose weight, above to gain. The activity multiplier accounts for exercise, non-exercise movement, and thermogenesis.

Macros (Macronutrients)

Protein builds and preserves muscle. Carbs fuel exercise and brain function. Fat regulates hormones and absorbs fat-soluble vitamins. All three matter — extreme restriction of any causes problems.

Why Weigh Yourself Weekly?

Daily weight fluctuates 1–3 kg from water, food, and hormones. Track weekly averages for 4+ weeks to see real trends. Most people need 2–4 weeks before seeing meaningful changes.

How to Use MacroMate

  1. Enter your age, height, weight, and select your biological sex.
  2. Choose your activity level from sedentary to very active.
  3. Select your goal: lose weight, maintain, or gain muscle.
  4. View your BMR, TDEE, and the recommended daily macros (protein, carbs, fat) in grams.

Why Calculate Your Macros

Calorie counting alone misses the full picture of nutrition. Two people eating 2,000 calories per day will have completely different results if one eats mostly protein and the other mostly sugar. Macronutrient ratios — the balance of protein, carbohydrates, and fats — determine whether you build muscle, lose fat, sustain energy, or feel fatigued. MacroMate uses the Mifflin-St Jeor equation, the most accurate BMR formula, to calculate your specific needs.

The TDEE (Total Daily Energy Expenditure) calculation accounts for your activity level, giving a realistic target rather than a generic one-size-fits-all recommendation. Whether your goal is weight loss, muscle gain, or athletic performance, understanding your macros turns vague dietary advice into actionable daily targets.

Frequently Asked Questions

Recommended Tools

Some links below are affiliate links. We may earn a commission at no extra cost to you.

MyFitnessPal Premium Log meals against your macro targets with a huge food database and barcode scanning. Cronometer Track macros plus micronutrients with research-grade accuracy.